Design of Memory Space Extention for Small-Scale Embedded System

Abstract

Recently many embedded systems use 32-bit processor core. The maximum memory space that a 32-bit processor could use is often limited to 4GB. However, for an application that requires large memory space beyond 4GB, the extension of memory space is provided. In this paper, we design a memory extension scheme that could extend the address space for embedded systems. We implemented the proposed scheme on a customized FPGA board. Evaluation results show that the scheme has successfully extended the memory space up to 16GB and that 31.53% slice LUTs and 12.52% slice registers of the Xilinx Zynq FPGA resource are used in this system design.